Hello, I bought the Bluefruit LE Sniffer - Bluetooth Low Energy (BLE 4.0) - nRF51822 - V3.0 from Adafruit Bluefruit.
So, I downloaded nRF Sniffer for Bluetooth LE 3.0 and tried to use Wireshark according to the nRF Sniffer for Bluetooth LE v3.0.0 User Guide.
But there was an invisible problem in the Wireshark interface.

In the user guide, this problem is because of firmware HEX file.

So, I tried to install and use nRF Connect to program the firmware HEX file.
I think nRF Connect support nRF51822

But I have 'Unsupported device. The detected device could not be recognized as neither JLink device nor Nordic USB device.' problem.

1. Is this a problem because of the firmware HEX file, right?
2. Then, I want to use nRF Connect to solve this problem, but why is it not working? and how to solve this problem?